Loom binder



Patented Apr. 24, 1934 "ram esser LOOM BINDER Verner Lindsjo, Hopedale,Mass, assignor to Draper Corporation, Hopedale, Mass, a

ration of Maine Applioation September 28, 1933, Serial No. 691,370

2 Claims.

The present invention relates to looms, and more particularly to theshuttle engaging binders thereof.

Heretofore it has been customary to provide the shuttle boxes of thefly-shuttle looms with a binder for frictionally engaging and checkingthe shuttle as it enters the box. The binder is usually made to performanother function, that is, to control the protection mechanism. To thisend, binder is usually comprised of a rigid binder body pivoted at oneend to the shuttle box. When the binder is engaged by the incomingshuttle it first swings laterally of the shuttle to cooperate with theprotection mechgl anism, and then applies friction to the shuttle forthe purpose stated.

It is a considerable problem to shape the shuttle engaging face of arigid binder body so that,

fter the binder swings about its pivot a distance which may varyaccording to the adjustment of the protection mechanism, the face willproperly contact the shuttle. It has been proposed to make the shuttlecontacting face of the binder yieldable for the purpose of causing it toconform to the side of the shuttle and thus exert friccontact throughouta greater area. However, such constructions have been unsatisfactory,for various reasons, with the result that th standard binder in generaluse has continued so to be the rigid binder with a rigid, curved facewhich admittedly has too little contact with the shuttle.

It is, accordingly, the object of my invention provide a loom binderwhich has a resilient nuttle enga ng face capable of conforming to -eside of the shuttle but which shall not be subject to the disadvantageof prior binders provided with a yielding face.

The preferred embodiment of my invention is illustrated on theaccompanying drawing, of

which:

Fig. l is a plan view of the left hand end of the lay and the left handshuttle box;

Fig. 2 is a longitudinal sectional View of the ie; binder of to a largerscale; and

Fig. 3 is a sectional view taken approximately on line 3-3 of Fig. 2,but to a still larger scale.

Referring to the drawing, the lay l is mounted on swords 2, only one ofwhich is shown, for soreciprocation toward and from the front of theloom in the usual manner. It is noted that the front of the loom istoward the bottom of the sheet in Fig. 1. The lay may carry similarshut-- tle boxes at opposite ends thereof but only the 55.1eft hand boxis herein disclosed. This shuttle box includes a floor 3 formed on theusual metal lay-end, a front box plate a and a back box plateillustrated fragmentarily at 5. i

The shuttle 6 is picked out of the shuttle box by picker stick 7 and maybe returned or picked my back into the shuttle box by similar means, notshown, at the opposite side of the loom. A binder 3 the shu tle box ispivoted at its outer end on a bolt 9 which serves to secure the outerend of the back box plate to the lay; A suitable binder spring is hasone end fixed to the lay as at 11 and its other end bears against thebinder to swing the same forwardly toward the path of the shuttle. Whenthe shuttle first enters the shuttle box it swings the binder rearwardlyto thereby tilt the finger 12 on protector rod 13 and prevent stoppingof the loom from the usual protection mechanism (not shown).

In order that the shuttle may tilt the finger 12 quickly and positively,the portion 14 of the face of the binder, which is first engaged by theincoming shuttle, is inclined at an appreciable angle to the path of theshuttle. The remainder of the face of the binder should be substantiallyparallel to the rear wall of the shuttle, in order to contact the sameover a substantial area. Since the pivotal movement of the binder mayvary with difierent operating conditions a rigid face on the binderwould not always have proper contact with the shuttle, and l haveaccordingly provided a resilient surface which is capable of conformingto the shuttle.

In the present embodiment of my invention, While the binder body isrigid, the face of the binder is recessed from a point 15, which isabout the longitudinal center of the binder body, to a point 15 adjacentthe hole 17 for the pivot bolt 9. The shuttle engaging member 18 isconstituted by a flat, spring steel plate which may have its surfacecovered with leather as at 19. This member has its inner-end fixed tothe binder body, as by bolts 20, 20, and extends substantially acrossthe recess in the binder body.

The outer free end of the member 18 is normally biased toward the pathof the shuttle, but movement of the member in that direction is limitedby means herein constituted by a flat plate '21 which is secured to theface of the binder body as by bolts 22, 22 and overlaps the free end ofthe member 18. A leaf spring 23 is housed within the recess and is bowedintermediate its ends into contact with the member 18. The point ofcontact 24 with the member is intermediatethe ends of the latter, ithaving been found that such construction contributes materially to theability of the resilient member to conform to the wall of the shuttle.

The spring 23 is a leaf spring in the sense that it is formed of flatstock. It need not necessarily be laminated. In the construction shownthe spring is integral with a flat portion 25 which extends along theback wall of the recess to form a backing for the spring. The springcontacts its backing at its outer end 26. An adjusting screw 2'7 isthreaded into a nut 28 embedded in the binder body. The screw may carrya lock nut 29. The end of the adjusting screw contacts the backing 25adjacent the outer end thereof and, in an obvious manner, may beutilized to vary the effective strength of the spring 23.

The contact points 24 and 26 should be provided with a film of grease oroil, there being a relative sliding movement between the contactingparts. When the adjusting screw is proper ly adjusted and the contactpoints mentioned properly lubricated the binder proves to be veryefficient in operation. At the same time, the present constructionprovides no weak parts which might be subject to excessive breakage, hasno rubber pads to deteriorate, and is devoid of other objectionablefeatures of prior art constructions. However, changes maybe made in theconstruction disclosed, within the scope of the appended claims, withoutdeparting from the spirit of the invention.

'I claim:

1. A shuttle box for looms, having a binder therein, said binder beingcomprised of a rigid binder body having the face thereof recessedthroughout a substantial proportion of its length, a resilient shuttleengaging member having one end fixed to said binder body and having itsother end free and extending across said recess, a plate secured to theface of said binder body and overlapping the said free end of saidmember for limiting movement of the latter toward the shuttle, and aleaf spring positioned within said recess, said spring being comprisedof a backing bearing against said binder body and a resilient armconnected to the backing and bearing laterally against said memberintermediate the ends of the latter.

2. A shuttle box for looms, having a binder therein, said binder beingcomprised of a rigid binder body pivoted at its outer end to the shuttlebox and having the face thereof recessed from about the center of thebinder body to a point adjacent the pivot point thereof, a resilientshuttle engaging member having its inner end fixed to the said face ofthe binder and having its outer end free, said member extendingsubstantially across said recess, a plate at the outer end of saidbinder body which plate overlaps the said free end of said member forlimiting movement of the latter toward the shuttle, a leaf spring housedwithin said recess, said spring being comprised of a backing bearingagainst said binder body and a resilient arm connected to the backingand bearing laterally against said member intermediate the ends of thelatter.

VERNER LINDSJO.

